<!--
 * Copyright ©
 * #  
 * @author: zw
 * @date: 2021-12-03 
 -->

<template>
  <div class="type-nav">
    <div class="container">
      <div @mouseleave="leaveShow" @mouseenter="enterShow">
        <h2 class="all">全部商品分类</h2>
        <transition name="sort">
          <div class="sort" v-show="show">
            <div class="all-sort-list2" @click="goSearch">
              <div class="item" v-for="(c1, index) in categoryList" :key="c1.categoryId" >
                <h3 :class="{ cur: currentIndex == index }" @mouseenter="changeIndex(index)">
                  <a :data-categoryName="c1.categoryName" :data-category1Id="c1.categoryId" >{{ c1.categoryName }}</a>
                </h3>
                <div class="item-list clearfix" :style="{ display: currentIndex == index ? 'block' : 'none' }" >
                  <div class="subitem">
                    <dl class="fore" v-for="c2 in c1.categoryChild" :key="c2.categoryId" >
                      <dt>
                        <a :data-categoryName="c2.categoryName" :data-category2Id="c2.categoryId" >{{ c2.categoryName }}</a>
                      </dt>
                      <dd>
                        <em v-for="c3 in c2.categoryChild" :key="c3.categoryId" >
                          <a :data-categoryName="c3.categoryName" :data-category3Id="c3.categoryId" >{{ c3.categoryName }}</a>
                        </em>
                      </dd>
                    </dl>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </transition>
      </div>
      <nav class="nav">
        <a href="###">服装城</a>
        <a href="###">美妆馆</a>
        <a href="###">尚品汇超市</a>
        <a href="###">全球购</a>
        <a href="###">闪购</a>
        <a href="###">团购</a>
        <a href="###">有趣</a>
        <a href="###">秒杀</a>
        </nav>
    </div>
  </div>
</template>

<script lang="js">
import { defineComponent, onMounted, computed, ref } from 'vue'
import { useInstance } from "@/utils";
export default defineComponent({
  name: 'TypeNav',
  setup(props, {emit, slots}) {
    const { $store, $router } = useInstance();
    const currentIndex = ref(-1);
    const show = ref(true);

    const goSearch = (event) => {
      const node = event.target;
      const { categoryname: categoryName, category1id, category2id, category3id } = node.dataset;
      if (categoryName) {
        const query = { categoryName };
        category1id && (t => query[t] = eval(t))('category1id');
        category2id && (t => query[t] = eval(t))('category2id');
        category3id && (t => query[t] = eval(t))('category3Id');
        $router.push({ name: "search", query, params: query });
      }
    }
    const changeIndex = (index) => {
        currentIndex.value = index;
    }
    const enterShow = () => {
      if ($router.currentRoute.value.path !== "/home") {
        show.value = true;
      }
    }
    const leaveShow = () => {
      currentIndex.value = -1;
      if ($router.currentRoute.value.path !== "/home") {
        show.value = false;
      }
    }
    onMounted(() => {
      if ($router.currentRoute.value.path !== "/home") {
        show.value = false;
      }
    });
   return {
     categoryList: computed(() => $store.state.home.categoryList),
     currentIndex,
     show,
     goSearch,
     changeIndex,
     enterShow,
     leaveShow
    }
   }
})
</script>

<style lang="scss" scoped>
.type-nav {
  border-bottom: 2px solid #e1251b;

  .container {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    position: relative;

    .all {
      width: 210px;
      height: 45px;
      background-color: #e1251b;
      line-height: 45px;
      text-align: center;
      color: #fff;
      font-size: 14px;
      font-weight: bold;
    }

    .nav {
      a {
        height: 45px;
        margin: 0 22px;
        line-height: 45px;
        font-size: 16px;
        color: #333;
      }
    }

    .sort {
      position: absolute;
      left: 0;
      top: 45px;
      width: 210px;
      height: 461px;
      position: absolute;
      background: #fafafa;
      z-index: 999;

      .all-sort-list2 {
        .item {
          h3 {
            line-height: 30px;
            font-size: 14px;
            font-weight: 400;
            overflow: hidden;
            padding: 0 20px;
            margin: 0;

            a {
              color: #333;
            }
            &.cur {
              background: skyblue;
            }
          }

          .item-list {
            display: none;
            position: absolute;
            width: 734px;
            min-height: 460px;
            background: #f7f7f7;
            left: 210px;
            border: 1px solid #ddd;
            top: 0;
            z-index: 9999 !important;

            .subitem {
              float: left;
              width: 650px;
              padding: 0 4px 0 8px;

              dl {
                border-top: 1px solid #eee;
                padding: 6px 0;
                overflow: hidden;
                zoom: 1;

                &.fore {
                  border-top: 0;
                }

                dt {
                  float: left;
                  width: 54px;
                  line-height: 22px;
                  text-align: right;
                  padding: 3px 6px 0 0;
                  font-weight: 700;
                }

                dd {
                  float: left;
                  width: 415px;
                  padding: 3px 0 0;
                  overflow: hidden;

                  em {
                    float: left;
                    height: 14px;
                    line-height: 14px;
                    padding: 0 8px;
                    margin-top: 5px;
                    border-left: 1px solid #ccc;
                  }
                }
              }
            }
          }
        }
      }
    }
    //过渡动画开始状态（进入）
    .sort-enter-active {
      height: 0px;
      opacity: 0;
    }
    // 过渡动画结束状态（进入）
    .sort-enter-to {
      height: 461px;
      opacity: 1;
    }
    // 定义动画时间、速率
    .sort-enter-active {
      transition: all .5s ease-in-out;
    }
  }
}
</style>
